People asked from her for a healthy offspring of a rich harvest and growth of cattle.

The proposed interbreeding with women on Earth would produce healthier offspring and keep their race alive.

It wouldn't matter to me, as long as we created a healthy offspring.

By the end of this century, there won't be enough new blood to promote genetically healthy offspring.

"But men seem to have a gradual rather than an abrupt change in the potential to produce healthy offspring."

"We don't really know what the complete effects are of men's age on their ability to produce viable, healthy offspring."

Nor are they involved in any of the vital processes, so this person should be able to have healthy offspring that carry the trait.

Many of them married first cousins, and still had relatively healthy offspring.

"So maybe Charles Braden made sure they had more than their fair share of healthy offspring."

We must have a high probability of successfully producing healthy offspring.